Rename EML files With Message Subject Line
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I am not sure this is the place to ask. I found this site when a Google search return a page for EMLReader. My issue is with our mail archive/journaling. When we retrieve messages they are downloaded with file names like: 00db2d52a8081ad5e1e8e8da3fd020c3bc06e12a7b87798056be9e45f68dba8c.eml When they are uploaded the names contain information like subject, To and From. Is there a way to grab information from the EML file and rename it with the subject line for example?
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I am not sure this is the place to ask. I found this site when a Google search return a page for EMLReader. My issue is with our mail archive/journaling. When we retrieve messages they are downloaded with file names like: 00db2d52a8081ad5e1e8e8da3fd020c3bc06e12a7b87798056be9e45f68dba8c.eml When they are uploaded the names contain information like subject, To and From. Is there a way to grab information from the EML file and rename it with the subject line for example?
You should be able to use MimeKit[^] to parse the file. If you just want the subject, you don't even need to load the whole file:
public static string GetMessageSubject(string fileName)
{
var headers = MimeKit.HeaderList.Load(fileName);
return headers[MimeKit.HeaderId.Subject];
}NB: Be aware that the message subject could contain characters which are not valid in a filename. It could also be longer than the maximum allowable filename, or make the file's path longer than the maximum allowable file path.
"These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer
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You should be able to use MimeKit[^] to parse the file. If you just want the subject, you don't even need to load the whole file:
public static string GetMessageSubject(string fileName)
{
var headers = MimeKit.HeaderList.Load(fileName);
return headers[MimeKit.HeaderId.Subject];
}NB: Be aware that the message subject could contain characters which are not valid in a filename. It could also be longer than the maximum allowable filename, or make the file's path longer than the maximum allowable file path.
"These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer
Thank you for your reply. More specifically I am looking for something that would rename all the files within a folder. We have folders that can contain over 100,000 files. Unfortunately I am not an expert at scripting so I am looking for a complete script. If I wanted to add To and From in the name would it be as simple as adding another line like: return headers[MimeKit.HeaderId.To];
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Thank you for your reply. More specifically I am looking for something that would rename all the files within a folder. We have folders that can contain over 100,000 files. Unfortunately I am not an expert at scripting so I am looking for a complete script. If I wanted to add To and From in the name would it be as simple as adding another line like: return headers[MimeKit.HeaderId.To];
Yes,
headers[MimeKit.HeaderId.To]will return the list of addresses in the "To" field, andheaders[MimeKit.HeaderId.From]will return the list of addresses in the "From" field. There could potentially be multiple addresses in both fields. And the same caveat about invalid characters and filename/path length limitations applies.
"These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer
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Yes,
headers[MimeKit.HeaderId.To]will return the list of addresses in the "To" field, andheaders[MimeKit.HeaderId.From]will return the list of addresses in the "From" field. There could potentially be multiple addresses in both fields. And the same caveat about invalid characters and filename/path length limitations applies.
"These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer
I didn't even know about that. Thanks for the clarification.
